Cao, YingWu, ZhaoxianYuan, KunSayed, Ali H.2025-06-272025-06-272025-06-26202510.1109/tpami.2025.3583104https://infoscience.epfl.ch/handle/20.500.14299/251670On the Trade-off between Flatness and Optimization in Distributed Learningtext::journal::journal article::research article